The Challenge of Service Level Scalability for the Cloud

Luis M. Vaquero, Juan Cáceres and Daniel Morán
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Luis M. Vaquero: Telefónica Investigación y Desarrollo, Spain
Juan Cáceres: Telefónica, Spain
Daniel Morán: Universidad Nacional de Educación a Distancia, Spain

International Journal of Cloud Applications and Computing (IJCAC), 2011, vol. 1, issue 1, 34-44

Abstract: This paper presents a brief overview of the available literature on distributed systems scalability that serves as a justification for presenting some of the most prominent challenges that current Cloud systems need to face in order to deliver their pledged easy-to-use scalability. Through illustrative comparisons and examples, this paper aims to make the reader’s acquaintance with this long needed problem in distributed systems: user-oriented service-level scalability. Scalability issues are analyzed from the Infrastructure as a Service (IaaS) and the Platform as a Service (PaaS) point of view, as they deal with different functions and abstraction levels. Next generation Cloud provisioning models rely on advanced monitoring and automatic scaling decision capabilities to ensure quality of service (QoS), security and economic sustainability.

Date: 2011
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